One side of the rectangle is three times larger than the other side. Find the sides of the rectangle if its perimeter is 64cm.

1) Determine the length of the first side of the rectangle if we know that its second side is 3 times larger than the first side, and the sum of all the lengths of the sides is 64 cm.We form an equation where:

X is the first side;

3X – second side;

64 – perimeter.

(X + 3X) * 2 = 64;

2X + 6X = 64;

8X = 64;

X = 64/8;

X 8 cm.

2) we will determine the length of the second side of the rectangle if we know that the first side is 3 times smaller and made a length of 8 cm.

8 * 3 = 24 cm.

Answer: the sides of the rectangle were 8 cm and 24 cm long.